Zobrazeno 1 - 10
of 170
pro vyhledávání: '"Wio, Horacio S"'
We study a model of seed dispersal that considers the inclusion of an animal disperser moving diffusively, feeding on fruits and transporting the seeds, which are later deposited and capable of germination. The dynamics depends on several population
Externí odkaz:
http://arxiv.org/abs/1703.05755
The deterministic KPZ equation has been recently formulated as a gradient flow, in a nonequilibrium potential (NEP) \[\Phi[h(\mathbf{x},t)]=\int\mathrm{d}\mathbf{x}\left[\frac{\nu}{2}(\nabla h)^2-\frac{\lambda}{2}\int_{h_0(\mathbf{x},0)}^{h(\mathbf{x
Externí odkaz:
http://arxiv.org/abs/1511.03727
Publikováno v:
Papers in Physics 5, 050010 (2013)
Recently, a variational approach has been introduced for the paradigmatic Kardar--Parisi--Zhang (KPZ) equation. Here we review that approach, together with the functional Taylor expansion that the KPZ nonequilibrium potential (NEP) admits. Such expan
Externí odkaz:
http://arxiv.org/abs/1401.6425
We present a master equation approach to the \emph{narrow escape time} (NET) problem, i.e. the time needed for a particle contained in a confining domain with a single narrow opening, to exit the domain for the first time. We introduce a finite trans
Externí odkaz:
http://arxiv.org/abs/1206.2204
Autor:
Krishnan, Raishma, Wio, Horacio S.
Previous works have shown that time asymmetric forcing on the one hand, as well as non-Gaussian noises on the other, can separately enhance the efficiency and current of a Brownian motor. Here, we study the result of subjecting a Brownian motor to bo
Externí odkaz:
http://arxiv.org/abs/1010.0484
Autor:
Wio, Horacio S.
Publikováno v:
Published in Int. J. Bif. & Chaos v.19, 2813-2821 (2009)
We present a variational formulation for the Kardar-Parisi-Zhang (KPZ) equation that leads to a thermodynamic-like potential for the KPZ as well as for other related kinetic equations. For the KPZ case, with the knowledge of such a potential we prove
Externí odkaz:
http://arxiv.org/abs/0911.4800
Publikováno v:
J. Phys. A 42, 434008 (2009)
We study the kinetics for the search of an immobile target by randomly moving searchers that detect it only upon encounter. The searchers perform intermittent random walks on a one-dimensional lattice. Each searcher can step on a nearest neighbor sit
Externí odkaz:
http://arxiv.org/abs/0909.1048
Autor:
Wio, Horacio S.
Opposing to a (common) belief against the existence of a thermodynamic-like potential for the KPZ equation, here we present a derivation for such a functional. With its knowledge we prove some global shift invariance properties previously conjectured
Externí odkaz:
http://arxiv.org/abs/0709.4439
Autor:
Mangioni, Sergio E., Wio, Horacio S.
We analyze the effect of a colored non Gaussian noise on a model of a random walker moving along a ratchet potential. Such a model was motivated by the transport properties of motor proteins, like kinesin and myosin. Previous studies have been realiz
Externí odkaz:
http://arxiv.org/abs/0707.3206